<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			#outer-box{
				width:120px;
				height:120px;
				border:1px solid gray;
				text-align:center;
			}
			#inner-box{
				display:inline-block;
				width:30px;
				height:30px;
				background-color:orange;
			}
		</style>
	</head>
	<body>
		<div id="outer-box">
			<div id="inner-box"></div>
		</div>
	</body>
</html>
